Sound record



U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Fled April 7, 1928 FIGJ.

| :use-(eg nnuunnnonnnnnn'nn/ 2 Smeta-Shui 1 Sept. 16, 1930. 1. c. KRoEsEN SOUND RECORD Filed April 7, 1928 2 Shuts-She 2 Patented Sept. 16, 1930 UNITED sTATas PATENT OFFICE u! oLnIs xnonsnn, or BnLLnvrLLn, mrw ima! SOUND BECOBD Application lcd April 7, 1928. Serial Ne. 868,000.

and may be utilized for the operation of any well known type of electro-magnetic sound re roducin unit.

a plurality of relatively narrow sound recor strips are located side by side on a flexible film as for example a standard motion picture projection film. Apparatus associated with said film vis arranged to pass light' through a single record strip which may be selected at the will of the operator. In one form of the invention an endless film is pro-l vided with the record strip arranged in the form of a helix thereabout. The source of light and light sensitive apparatus in this case are continually moved transversely of the film as the helix of the record stri pro- 22% gresses. The arrangement ma be suc that the film is synchronized with t e picture be- 'ing projected, and may be adapted to play through a sin le reel or through an entire performance epending. upon the relationshi of the various parts. i

he invention also consists in certain new A and original features ,of construction and combinationsof parts hereinafter set forth and claimed. f I

Althou h the novel features which are believed to characteristic of this invention will be particularly pointed out in the claims appended hereto, the invention itself, as to its objects and advantages', the. mode of its operation and the manner of its organization may be better understood by referring to theI following description taken in connection with the accompanying drawings forming a part thereof, in whlch Fig. 1 is a front elevation of the film shown vaccor ance with'the present inventiox.

ing the record strips incorporated thereon;

Fig. 2 is a side elevation of sound reproducing apparatus constructed in accordance with this invention;

F ig. 3 is a section taken along the line 3-3 of Fig. 2 showing the record film and the light aperture together with -the driving mechanism;

Fig. 4 is an elevation of a modified form of apparatus in Which the light aperture is stationary and the film is progressively moved in a lateral direction; and

Fig. 5 shows a schematic arrangement of a modified form ofapparatus in which the record strips are parallel to the line of movement of the film, and the light aperture progressively traverses the successive Strips in alternate directions.

Like reference characters denote like parts in the several figures of the drawings.

In the followin description and in the claims parts will gbe identified by specific names for convenience7 but they are intended to be as generic in their application to similar parts as the art will permit. v Referring to the drawin s more in detail, a motion picture film 10 o well known construction is shown in Fig. 1 having sound record channels or strips represented thereon at 1 to 9. These channels are formed obliquely of the film and extend progressively therearound in 'the form of a helix. .The sound record Strips comprise light and dark sections which are formed 'in any well known manner to represent sound vibrations and are cai pable of passing a Variable beam of`light.

Film 10, as shown more in detail in Figs. 2 and 3, may be passed around a pair of driving sprockets 11 and cooperating reels 12 which may besuitably placed for maintaining the film in its desired formation. The light pro- ]ecting apparatus comprising a lamphouse 13 is supported on platform 14 Which may be moved laterally as by screw 15, 'threaded bearing 16 being secured to base 14 in engagement with said screw. Aperture plates 17 are eo f i in

supported by base 14 on opposite sides of the film 10 andI are provided with apertures 18 of proper formation to confine-the transmitted ray of light to a single sound record stri Llight sensitive cell 20 supported in any convenient manner asv by member 21A from base 14 is suitably positioned to receive light projected from lamp house 13 which passes through aperture 18 of aperture plate 1-7. Light sensitive cell 20 is capable of receiving the varying ray of light passing through aperture 18 and translating said light into a pulsatingelectric current ina manner which is well known in the art. The electric current may then be utilized for the projection ofsound waves in any convenient manner.

Screw 15 is suitably synchronized with sprockets 11 for causing a transverse movement of aperture 18 and associated apparatus so that said aperturefollows the helical sound record Strips as the film is'advanced. One method of synchronization has been in-` dicated diagr'ammatically as gear 22 meshing with a pinion 21 carried by sprocket 11, and driving gear '23 associated with screw 15. The ratio of speed of sprocket 11 to that of screw 15 obviously depends .upon the width of the record strips and the total length of the endless film.

The arrangement above described maybe operated simultaneously with the projection of a motion picture. The sound record may comprise reproductions of the voices of the actors or may include 'orchestral selections which ordnaril accompany'the picture.` In the latter case the device is particularly useful in enabling small theatres to be equipped with apparatus for reproducing. large orchestras which' frequently accompany showings of the picture in the larger theatres. The sound record film would be shipped with the picture film. and afl'ords a simple means for msuring that the roper music accompanies the picture; O viously it is equally useful in reproducing appropriate sounds to accompany the depicted action, such as music or speech, and may be employed Wherever sound seq'uences are to be reproduced.

Referring to the arrangement shown in Fig. 4, a mechanism is shown comprising an' aperture plate 17 Which is mounted u on a suitable stationary framework 14 an provided with an aperture 18 for the purpose above described. Film is carried upon sprockets 11B. One of said sprockets, may be driven by suitable gear tram comprising 55 spur gear 30 and pinion 31. Pinionv 31 may be Secured to shaft 32 on which isloosely mounted sleeve 33 carrying collar 34 and sprocket 39'.. Sleeve 33 may be' slidably secured' on .shaftV 32 but caused to rotate 1n connection then'e'with by an suitable means such as key 35. -Sprocket 11 'having sleeve 36 and collar 40 associated therewith maybe slidably supported on rod 37 as by key 38. .1 i

-Collars 34 and'40 are enga 4 by yokes 41 65 carried upon spanner 42 in w 'ch screw 43 is threaded. Screw 43 is secured to and adapted to turn with spur gear 30. The relationship of the pitch of screw 43 to the gear ratio of gear and pinion 31 is such that collars 34 and together with their associated p sleeves and s rockets are moved laterally by an amount a apted to maintain aperture 27 of aperture plate 25 in alignment with' the4 helical sound record strip as the film is progressively advanced.

This arrangement operates in a manner similar to that'described in connection with Figs. 2 and 3,' although in this case the aperture plate and projecting apparatus remain stationary and the film is shifted laterally as it advances. The essential feature, however, is to obtain progressive relative movement between the 'film and the aperture wherethe light' ray may be always projectedI b tii rough a single record strip.

In the arrangement shownin Fi 5, film 10A is provide with a pluralityo vertical record strips and is adapted to be alternately moved in opposite directions whereby aperture 18 of 'aperture plate 17 may be caused to ass over successive record Strips in opposite irections. In this modification a .pair of sprockets 110 are selectively driven from shaft by means of clutch 56 and bevel gears 57 and 58. vClutch 56 maycomprise a collar 59 having oppositely inclined gear teeth 60 and 61 on opposite sides thereof.l Collar 59 is slidably mounted on driving shaft 55 but is keyed thereto as by sliding key 62. I

Teeth 60 and 61 cooperate with similar teeth carried by sleeves 63 and 64 which in turn are operatively' associated with bevel gears 57 and 58 respectively. With the above arrangement of parts, sprockets 11C are selectively driven in opposite directions in accordance with the position of clutch 56 Which o eratesfto alternately connect said-gears to s laft 55. Clutch 56 is in turn operated by oke 65 which cooperates with collar 59 and `1s carried by pivoted lever 66.

v A cam 67 cooperates with the free end of' lever 66 for alternately raising andlowering said lever for 'selectively bringing teeth 60 and 61 into engagement. -Suitable means, such as spring 68, may be employed for holding lever 66 in engagement with cam 67. For intermittently rotating cam 67 a suitable distance to reverse the 'position of said lever, a pwl 68 and ratchet 69 are provided, said pawl ing operated by bell cranklever 70 havin armature 71 of electro-magnet 7 2 associate therewith. 4

When ma et 72 Vis energized, armature 71 is'dis laced aterally, movm pawl 68 downwar y and advancing ratc et 69 one position. Lever 66 then contacts with a portion of cam 67 having a different elevation, thereby throwing clutch 56 to 'an opposite position and reversing'the direction of drive of film 10A.

` entire feature.

Aperture 18 is moved laterall to the next successive sound record strip y screw 75 cooperatin with base 76 carrying aperture plate 52. crew 75 is rotated in accordance with themovement of ratchet 6'9 by asuitable gear train includin bevel gears 77 and s ur gears 7 8.` The pito of screw 75 is such t at the movement imparted thereto in stepping the ratchet 69 around one position is suflicient to bring aperture 18 in alignment with the next successive sound record strip.

The apparatus shown' in Fig. 5 is entirely controlled by electromagnet 72 and is so designed that an impulse of said electromagnet operates to reverse the direction of film 10A and simultaneously to Shift a erture 18v to the next record strip. The may thus be formed with a plurality of Parallel records, each of which is adapted to play for any desred length of time, as for example, that corresponding to one reel of a motion picture..

The various arallel strips can thus be made to correspon with the various reels of an The apparatus would acoordingly be operated simultaneously with the changing of projection machines when at the end of each reel.

The above described invention permits a motion picture film of standard size to be employed as a sound record whereby vafilm, a sound record thereon transversely displaced with' respect to said film and forming v a continuous helical record.

5. An endless transparent light-sensitive film having a sound record thereon, said record bein of a width lessthan that of said film, sai recordcomprising a plurality of gortions paralleling and adjacent each other ut not paralleling the edges of the film, said portions forming a single Continuous record. In testimony whereof I have hereunto set m hand.

y JAY CLEIS KROESEN. I

rious standard parts may be used in connection therewith although the use of a film of this size is not essential. 'The aperture plate is shifted laterally with respect to the film, either continuously or intermittently, depending upon whether the sound record is of helical formation or extends parallel to the a plurality of records are superimposed upon line of movement of. the film. In either case the same film and the total length of film re- A quired is correspondingly decreased.

While certain novel features of the invention have been shown and described and are pointed out in the annexed claims, it will be understood that various omissions, substitu-- tions and changes in the forms and 'details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention.

What is ciaimed i s:

1. In a transparent light sensitive endless film, a narrow sound record thereon and disposed in helical relationship with respect thereto.Y

2. In a transparent li ht sensitive film, a sound record thereon o a width less than that of said film and progressively displaced laterally With respect thereto.

3. -In an endless transparent light sensit1ve film7 a sound record thereon of a width less than that of said film and pro essively Vdisplaced laterally with respect t ereto to v v DISCLAIMER 1,776,123.-Jay O'leis Kroesen, Be11evi11e,'N. J., .SOUND REcoRb.. Patent dated f' 1 September 16, 1930. Disclaimer filed-February 1, 1938, by the assignee, Radio' Corporation of America. i i

VIlflexfeby enters this disclaimer to claim 2 insai specification.

f '`L'`'[0 1Yiofial Gazette February 22, 1988;] 

